EP0364150B1 - A fluorophosphate optical glass - Google Patents
A fluorophosphate optical glass Download PDFInfo
- Publication number
- EP0364150B1 EP0364150B1 EP89310118A EP89310118A EP0364150B1 EP 0364150 B1 EP0364150 B1 EP 0364150B1 EP 89310118 A EP89310118 A EP 89310118A EP 89310118 A EP89310118 A EP 89310118A EP 0364150 B1 EP0364150 B1 EP 0364150B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- partial dispersion
- optical
- refractive index
- optical glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000005304 optical glass Substances 0.000 title claims description 19
- DWYMPOCYEZONEA-UHFFFAOYSA-L fluoridophosphate Chemical compound [O-]P([O-])(F)=O DWYMPOCYEZONEA-UHFFFAOYSA-L 0.000 title claims description 11
- 239000011521 glass Substances 0.000 claims description 36
- 239000006185 dispersion Substances 0.000 claims description 33
- 239000000126 substance Substances 0.000 claims description 11
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 7
- 229910001637 strontium fluoride Inorganic materials 0.000 claims description 7
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 claims description 7
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 description 12
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 5
- 125000005341 metaphosphate group Chemical group 0.000 description 5
- 230000003292 diminished effect Effects 0.000 description 4
- 150000002222 fluorine compounds Chemical class 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 description 4
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 3
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 3
- 229910005693 GdF3 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 101000929049 Xenopus tropicalis Derriere protein Proteins 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000005303 fluorophosphate glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000010952 in-situ formation Methods 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/23—Silica-free oxide glass compositions containing halogen and at least one oxide, e.g. oxide of boron
- C03C3/247—Silica-free oxide glass compositions containing halogen and at least one oxide, e.g. oxide of boron containing fluorine and phosphorus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S501/00—Compositions: ceramic
- Y10S501/90—Optical glass, e.g. silent on refractive index and/or ABBE number
- Y10S501/902—Optical glass, e.g. silent on refractive index and/or ABBE number having ABBE number at least 70
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S501/00—Compositions: ceramic
- Y10S501/90—Optical glass, e.g. silent on refractive index and/or ABBE number
- Y10S501/903—Optical glass, e.g. silent on refractive index and/or ABBE number having refractive index less than 1.8 and ABBE number less than 70
Definitions
- This invention relates to a fluorophosphate optical glass having optical constants, i.e. refractive index (nd) of 1.54 to 1.60 and Abbe number ( ⁇ d) of 68 to 75 and having abnormal partial dispersion represented by a relative partial dispersion of at least 0.537.
- An optical glass having abnormal partial dispersion, capable of effecting correction of the secondary spectrum in designing a lens, is very important for designing the same and is of high utility value.
- fluorophosphate glasses having abnormal partial dispersion and a refractive index (nd) of at most 1.50, a number of reports have been made and it is known that the fluorophosphate glass disclosed in Japanese Patent Laid-Open Publication No. 144141/1988 has been produced on a commercial scale and used for various optical instruments.
- optical designers have eagerly had requirements for an optical glass having a higher refractive index, lower dispersion and abnormal partial dispersion.
- the optical glasses having optical constants satisfying such requirements are known as disclosed in Japanese Patent Publication Nos. 28169/1978, 4145/1985 and 14500/1987.
- the known optical glasses contain large amounts of Ba(PO3)2 and BaO as essential components as in a glass composition, for example, comprising 2.0 to 13.0% of MgF2, 0 to 20.0% of SrF2, 1.0 to 33.0% of BaF2, 0 to 8.0% of AlF3, 0 to 8.0% of YF3, 13.0 to 39.0% of Al(PO3)3, 0 to 24.0% of Mg(PO3)2, 1.0 to 20.0% of Ca(PO3)2, 5.0 to 19.0% of Ba(PO3)2, 10.0 to 36.0% of BaO, 1.5 to 12.0% of Y2O3 and/or Yb2O3, 0 to 6.0% of ZnO, 0 to 29.0% of PbO and 0 to 22.0% of Nb2O5, % being by weight, as described in Japanese Patent Publication No.
- a chemical composition comprising 15 to 32% of Al(PO3)3, 0 to 10% of Ba(PO3)2, 0 to 10% of Sr(PO3)2, 0 to 10% of Ca(PO3)2 and 0 to 10% of Mg(PO3)2, the sum of the metaphosphates being 20 to 32%, 20 to 70% of BaF2, 5 to 40% of SrF2, 0 to 15% of CaF2, 0 to 10% of MgF2, 0 to 5% of AlF3 and 0 to 5% of GdF3, the sum of the fluorides being 55 to 75%, and 5 to 22% of Gd2O3, 0 to 7% of La2O3, 0 to 10% of Y2O3 and 0 to 10% of Yb2O3, the sum of the rare earth element oxides being 5 to 22%.
- an optical glass having a glass composition comprising Al(PO3)3, BaF2, SrF2 and Gd2O3 as essential components has optical constants at which the inventors have aimed.
- the present invention is based on this finding.
- the present invention provides a novel fluorophosphate optical glass having a refractive index of 1.54 to 1.60, an Abbe number of 68 to 75 and a relative partial dispersion of at least 0.537, which has a chemical composition (% by weight) comprising:
- Al(PO3)3 is a main component essential for forming the network structure of glass, contributing to stability and increasing the chemical durability and is in a proportion of 15 to 32%, since if less than 15%, not only the chemical durability is diminished but also the glass becomes unstable, while if more than 32%,the crystallization tendency is too large to obtain the glass.
- Ba(PO3)2, Sr(PO3)2, Ca(PO3)2 and Mg(PO3)2 are optional components for raising the refractive index, increasing the chemical durability and improving the workability and are respectively in a proportion of 0 to 10%, since if more than 10%, the abnormal partial dispersion is lowered. This should be avoided. If the sum of the amounts of these metaphosphates is less than 20% or more than 32%, the glass tends to be too crystallized and a satisfactory glass is not produced.
- BaF2 is an essential component for lowering the dispersion and raising the abnormal partial dispersion and is present in a proportion of 20 to 70%, since if less than 20%, the glass tends to be crystallized, while if more than 70%, the chemical durability is diminished and the glass is too unstable.
- SrF2 is an essential component functioning similary to BaF2 and serving to stabilize the glass jointly with BaF2 and is in a proportion of 5 to 40%, since if less than 5%, the stabilizing effect on the glass is inadequate, while if more than 40%, the chemical durability is diminished and the crystallization tendency is too great to maintain the glass.
- CaF2 is an optional component, although having the similar effect to BaF2 and SrF2, and is in a proportion of 0 to 15%, since if more than 15%, the glass tends to be crystallized and becomes unstable.
- MgF2 is an optional component, although having the similar effect to BaF2 and SrF2, and is in a proportion of 0 to 10%, since if more than 10%, the glass tends to be crystallized and becomes unstable.
- AlF3 is an optional component having an effect of lowering the dispersion and is in a proportion of 0 to 5%, since if more than 5%, the glass tends to be to crystallized to maintain it.
- GdF3 is an optional component having an effect of raising the refractive index without raising the dispersion and an effect of increasing the hardness of the glass and is in a proportion of 0 to 5%, since if more than 5%, the glass tends to be crystallized too maintain it.
- the glass becomes unstable, while if more than 75%, not only the chemical durability is diminished, and also the glass becomes unstable.
- Gd2O3 is an essential component capable of raising the refractive index without raising the dispersion as well as imparting a high refractive index and abnormal partial dispersion without substantial introduction of barium oxide component, and further capable of raising the hardness of the glass and serving to improve the mechanical strength and workability, and is in a proportion of 5 to 22%, since if less than 5%, the intended refractive index cannot be obtained and the mechanical strength and workability are deteriorated, while if more than 22%, dissolving of it is difficult and the insoluble material is precipitated, resulting in the crystallization tendency.
- La2O3, Y2O3 and Yb2O3 are optional components, although having the similar effect to Gd2O3, and are respectively in a proportion of 0 to 7%, 0 to 10% and 0 to 10%, since if the amounts of La2O3, Y2O3 and Yb2O3 are respectively more than 7%, 10% and 10%, the glass tends to be too crystallized to maintain it.
- the intended refractive index cannot be obtained, while if more than 22%, dissolving of them is difficult and insoluble ones are precipitated, so that the glass tends to be too crystallized to maintain it.
- Production of the fluorophosphate optical glass of the present invention can generally be carried out by mixing raw materials in a predetermined proportion to give the above described composition, melting the mixture at a temperature of 1000°C to 1250°C, and then subjecting the melt to casting in conventional manner.
- the fluorophosphate optical glass of the present invention has optical constants, i.e. a refractive index (nd) of 1.54 to 1.60, an Abbe number ( ⁇ d) of 68 to 75 and abnormal partial dispersion represented by a relative partial dispersion of at least 0.537, is excellent in chemical durability as well as stability and can readily be produced on a commercial scale, as described above.
- glass composition of the present invention examples are shown in Table 1 and the refractive indexes (nd), Abbe numbers ( ⁇ d) and relative partial dispersion (ng-nF/nF-nC) are shown in Table 2.
- the fluorophosphate optical glass of the present invention was prepared by weighing the corresponding metaphosphates, oxides and fluorides, as raw materials, in predetermined proportions, mixing adequately these materials to prepare a starting material for the glass preparation, charging the starting material in a platinum crucible, melting in an electric furnace at a temperature of 1000 to 1250°C, stirring by a platinum stirrer to render the material clear and homogeneous, casting in a suitably preheated metal mold and then cooling gradually.
- Example 1 for example, the raw materials corresponding to the composition 2 of Example 1 were weighed and mixed adequately according the above described procedure and then melted in an electric furnace previously heated at 1100°C for 3 hours, thus obtaining a fluorophosphate optical glass with a refractive index (nd) of 1.58222, an Abbe number ( ⁇ d) of 69.2 and a relative partial dispersion (ng-nF/nF-nC) of 0.545.
- nd refractive index
- ⁇ d Abbe number
- ng-nF/nF-nC relative partial dispersion
- metaphosphates were used, but the present invention should not be construed to be limited thereto and of course, other raw materials capable of in situ formation of the metaphosphates can be used, for example, oxides and phosphoric acid in combination, or pyrophosphates to give the specified quantity according to the present invention.
- oxides and phosphoric acid in combination or pyrophosphates to give the specified quantity according to the present invention.
- pyrophosphates to give the specified quantity according to the present invention.
- the above described fluorides can partly be replaced by several percents of LiF, NaF and/or KF as far as the object of the present invention is not lost.
- the relative partial dispersion (ng-nF/nF-nC) in Table 2 means the degree of abnormal partial dispersion that a glass has positioned apart from the straight line connecting two points of relative partial dispersion when taking the relative partial dispersion on the ordinate and the Abbe number ( ⁇ d) on the abscissa choosing normal glasses 511605-K7 and 620363-F2 as a standard. Since in the scope of the present invention as claimed, the standard relative partial dispersion of the normal glasses are 0.532 and 0.521 respectively at an Abbe number ( ⁇ d) of 68 and 75, a glass has abnormal partial dispersion if the relative partial dispersion of this glass is apart from the straight line connecting two points of the standard relative partial dispersion.
- the glass of Example 1 has abnormal partial dispersion in view of its large relative partial dispersion (ng-nF/nF-nC), i.e. 0.545.
- the glasses of Examples 1 to 20 according to the present invention show higher refractive indexes (nd) and larger relative partial dispersion (ng-nF/nF-nC).
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP252350/88 | 1988-10-06 | ||
JP63252350A JPH02124740A (ja) | 1988-10-06 | 1988-10-06 | フツリン酸塩光学ガラス |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0364150A1 EP0364150A1 (en) | 1990-04-18 |
EP0364150B1 true EP0364150B1 (en) | 1992-12-09 |
Family
ID=17236065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89310118A Expired EP0364150B1 (en) | 1988-10-06 | 1989-10-03 | A fluorophosphate optical glass |
Country Status (4)
Country | Link |
---|---|
US (1) | US4990468A (ja) |
EP (1) | EP0364150B1 (ja) |
JP (1) | JPH02124740A (ja) |
DE (1) | DE68903825T2 (ja) |
Cited By (1)
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---|---|---|---|---|
CN102557437A (zh) * | 2010-12-20 | 2012-07-11 | 株式会社小原 | 光学玻璃、光学元件和预成型坯 |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3154575B2 (ja) * | 1992-11-20 | 2001-04-09 | 株式会社オハラ | 弗燐酸塩光学ガラス |
JPH1160267A (ja) * | 1997-08-14 | 1999-03-02 | Ohara Inc | 弗燐酸塩光学ガラス |
DE60126186T2 (de) * | 2000-06-05 | 2007-11-15 | Kabushiki Kaisha Ohara, Sagamihara | Optische Gläser die unter Betriebsbedingungen bei UV-Belichtung in Bezug auf ihren Brechungsindex möglichst stabil sind |
US7989376B2 (en) * | 2001-06-26 | 2011-08-02 | Afo Research, Inc. | Fluorophosphate glass and method for making thereof |
JP2008137877A (ja) | 2006-12-05 | 2008-06-19 | Hoya Corp | 光学ガラスおよび光学素子 |
CN101622207B (zh) | 2007-03-06 | 2016-08-31 | Hoya株式会社 | 光学玻璃、模压成形用预成形件、光学元件以及它们的制造方法 |
JP5442952B2 (ja) * | 2008-02-28 | 2014-03-19 | Hoya株式会社 | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子およびそれらの製造方法ならびにガラス成形体の製造方法 |
CN101544468B (zh) * | 2008-03-28 | 2013-05-01 | Hoya株式会社 | 氟磷酸玻璃、精密模压成形用预成形件、光学元件坯料、光学元件以及它们的制造方法 |
CN101544469B (zh) * | 2008-03-28 | 2014-01-01 | Hoya株式会社 | 氟磷酸玻璃、精密模压成形用预成形件、光学元件坯料、光学元件以及它们的制造方法 |
JP5069649B2 (ja) | 2008-03-28 | 2012-11-07 | Hoya株式会社 | フツリン酸ガラス、精密プレス成形用プリフォーム、光学素子ブランクおよび光学素子とそれら製造方法 |
JP5063537B2 (ja) | 2008-03-28 | 2012-10-31 | Hoya株式会社 | フツリン酸ガラス、精密プレス成形用プリフォーム、光学素子ブランクおよび光学素子とそれら製造方法 |
JP5115984B2 (ja) * | 2008-03-28 | 2013-01-09 | Hoya株式会社 | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子とそれぞれの製造方法 |
JP5658599B2 (ja) * | 2008-03-28 | 2015-01-28 | Hoya株式会社 | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子とそれぞれの製造方法 |
JP5188269B2 (ja) | 2008-05-30 | 2013-04-24 | Hoya株式会社 | 光学ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子およびそれらの製造方法 |
JP2010059021A (ja) * | 2008-09-04 | 2010-03-18 | Hoya Corp | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子それぞれの製造方法 |
JP5224979B2 (ja) * | 2008-09-04 | 2013-07-03 | Hoya株式会社 | プリフォームロットならびに光学素子の製造方法 |
US8361914B2 (en) | 2008-10-31 | 2013-01-29 | Margaryan Alfred A | Optical components for use in high energy environment with improved optical characteristics |
JP2010235429A (ja) * | 2009-03-31 | 2010-10-21 | Ohara Inc | 光学ガラス、光学素子及びプリフォーム |
CN101941798B (zh) * | 2009-07-10 | 2012-07-25 | 湖北新华光信息材料有限公司 | 低折射低色散光学玻璃 |
WO2011024270A1 (ja) | 2009-08-26 | 2011-03-03 | Hoya株式会社 | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子およびそれらの製造方法ならびにガラス成形体の製造方法 |
EP2341382B1 (en) * | 2009-12-15 | 2015-09-09 | Ricoh Company Ltd. | Zoom lens, camera apparatus, information device and mobile information terminal apparatus |
CN102476916B (zh) * | 2010-11-23 | 2013-12-18 | 湖北新华光信息材料有限公司 | 一种中折射率高阿贝数的磷冕光学玻璃 |
JP5919594B2 (ja) * | 2010-12-15 | 2016-05-18 | 株式会社オハラ | 光学ガラス、光学素子およびプリフォーム |
JP5443415B2 (ja) * | 2011-03-15 | 2014-03-19 | Hoya株式会社 | フツリン酸ガラス、プレス成形用ガラス素材、光学素子ブランク、光学素子およびそれらの製造方法 |
US10393887B2 (en) | 2015-07-19 | 2019-08-27 | Afo Research, Inc. | Fluorine resistant, radiation resistant, and radiation detection glass systems |
CN106746612B (zh) * | 2016-11-28 | 2019-02-19 | 湖北新华光信息材料有限公司 | 氟磷酸盐光学玻璃及其制备方法和光学元件以及应用 |
CN106904831B (zh) * | 2017-04-01 | 2019-07-09 | 湖北新华光信息材料有限公司 | 光学玻璃及其制备方法和光学元件 |
KR102022976B1 (ko) * | 2017-05-19 | 2019-09-20 | 한국광기술원 | 형광 장수명 특성을 갖는 능동소자용 불소인산염계 유리 |
JP6985173B2 (ja) * | 2018-02-14 | 2021-12-22 | 光ガラス株式会社 | 光学ガラス、光学素子、光学系、カメラ用交換レンズ及び光学装置 |
CN113480170B (zh) * | 2021-07-30 | 2022-09-06 | 湖北新华光信息材料有限公司 | 氟磷酸盐光学玻璃及其制备方法 |
CN115385572B (zh) * | 2022-09-05 | 2023-07-18 | 湖北新华光信息材料有限公司 | 磷酸盐光学玻璃及其制备方法和光学元件 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE471354A (ja) * | 1946-01-29 | |||
DE1496566B2 (de) * | 1965-12-31 | 1971-06-16 | Ernst Leitz Gmbh, 6330 Wetzlar | Verfahren zum Herstellen eines Flouoro phosphatglases mit relativ hoher Brechzahl, kleiner Dispersion und erheblicher positiver anomaler Teildispersion |
JPS5842138B2 (ja) * | 1979-10-04 | 1983-09-17 | 株式会社 小原光学硝子製造所 | 弗化物ガラスの製造方法 |
DE3634675A1 (de) * | 1985-10-19 | 1987-04-23 | Leitz Ernst Gmbh | Optisches phosphatglas mit anomaler positiver teildispersion und verfahren zu seiner herstellung |
-
1988
- 1988-10-06 JP JP63252350A patent/JPH02124740A/ja active Granted
-
1989
- 1989-09-29 US US07/414,385 patent/US4990468A/en not_active Expired - Lifetime
- 1989-10-03 DE DE8989310118T patent/DE68903825T2/de not_active Expired - Lifetime
- 1989-10-03 EP EP89310118A patent/EP0364150B1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102557437A (zh) * | 2010-12-20 | 2012-07-11 | 株式会社小原 | 光学玻璃、光学元件和预成型坯 |
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US4990468A (en) | 1991-02-05 |
EP0364150A1 (en) | 1990-04-18 |
DE68903825D1 (de) | 1993-01-21 |
JPH02124740A (ja) | 1990-05-14 |
DE68903825T2 (de) | 1993-04-08 |
JPH0443854B2 (ja) | 1992-07-17 |
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